This research project determined the vapor-liquid equilibrium distribution ratio (K-value) for the refrigerants 22, 123, 134a, 32, 125, 143a, 404A, 407C, 410A, and 507A. This data was derived from measuring the moisture content of the vapor and liquid phases of specifically contaminated refrigerant samples at temperatures of 40°, 75° and 120°F (4°C, 24°C, and 49° C). The data will assist manufacturers and field service technicians in prevention and removal of moisture contamination of HVAC&R systems.